Topic: Devise ldap authenticatable returns 401 error
I am making some application in rails in which user needs to be log-in first to see the content, I used devise and ldap_devise_authenticatable to make user log-in through existing LDAP account but when i tried to log in with my account into my application then log-in failure occurs(401 error unauthorized) even though I already have account on ldap.
I used the following tutorial http://www.blackfistsecurity.com/2011/1 nd_27.html
And following is the screenshot of my ldap server page 
I know the problem is in my ldap configuration file. How can i configure it properly so that my application send correct string to ldap server like in above screenshot
Code of my ldap.yml is as follows:
authorizations: &AUTHORIZATIONS
group_base: ou=groups,dc=test,dc=com
required_groups:
- cn=admins,ou=groups,dc=test,dc=com
- cn=users,ou=groups,dc=test,dc=com
- [